Dumping body



May 15, 1928.

F. BISZANTZ DUMPINGBODY t .m n, NN m old u Z z Patented May 15, 1928.

UNITED .STATES 'PATENT OFFICE.

FRED BISZANTZ, OF GALION, OHIO, ASSIGNOR TO THE NATIONAL GRAVE VAULT CO.,

' OF GALION, OHIO, A CORPORATION OF OHIO.

DUMPING BODY.

Application med Noirember 2s, 1927. serial N0. 236,278.

This invention relates to dumping bodies and more particularly to the construction of a gravity operated dumping body which both tilts and shifts longitudinally in the dumping operation.

'An important object of the prese-nt invention is to provide a device of this character which is entirely automatic in v-both its dumping andl return 'movements and in which the' body is first elevated at its forward end without any rearward movement to permit the body to clear all obstructions and then simultaneously elevated and longitudinally shifted until the body has assumed a position where the rear end of the fra'ifne is cleared and the completion of ythe tilting operation is in order. n. z;

A further object of the present invention is to produce a device of thischari"cter which will be substantially entirely free from parts projecting beneath the frame upon which the body is mounted and which will be entirely free of portions which project beneath the frame in such manner as Figure 1.

to interfere with operation of any normal portion of the vehicle.

A still further object of the invention is to provide a device of this character which, due toits construction, may be produced at a very low7 cost, will be durable and eicient in service and may be readily controlled in its dumping and return movements.`

These and other objects I attain by the.

construction shown in 'the accompanying drawings, wherein for the purpose of illustration is shown a preferred embodiment of my invention and wherein Figure 1 ,lisa side elevation showing a dumping body constructed in accordance with my invention, the body being illustrated in the dumping position;

Figure 2 is a similar view with the body in the loading and load-transporting position;

Figure 3 is a section on the line 3-3 of Referring now more particularly to the drawings, a frame is provided including side members 10 and sultable transversely extending bracing members 12 maintaining the side members in properly spaced relation. These side vmembers are constructed to provide adjacent the rear ends thereof an outwardly extending Hange 13 lupon each of which is mounted a cam track 14. This cam track has a central peak 15 andfrom the peak slopes forwardly and downwardly with a re-entrantly curved face 16 to the level of the upper surface of the flange and from the peak slopes downwardly and rearwardly with a flat straight face 17. Secured to the ange and. associated with each track is a retaining bar. The central portion of this' retaining bar, indicated at 18, directly overlies the peakof the cam track and is formed as a cove. At opposite sides of the central portion 18, the retaining bar is provided with portions 19 and 20 opposing and paralleling the surfaces 16 and 17 of the cam track. The ends of the portions 19 and 20 are downbent, as lindicated at 21, and .then

The roller 24 yis located forwardly of the center of gravity of the body when empty,

while the roller 25 is located rearwardly of the center of gravity of the body while empty. The roller 24 is farther spaced from the bottom ofthe body than the roller 25. These rollers opera-te in the channels roduccd between the retaining bars and t eir` associated cams. The pivot shafts of the rollers are preferably retained in position in brackets 23' bylatch plates 26 secured to the outer face of the 'outer bracket plate of each pair, so that they are readily accessible for insertion or removal in replacement or assembly. The innerlbracket plate of each pair has secured thereto an inwardly extending flange 27 opposing and .adapted to seat upon the side member of the frame when the body is in load transporting position.

At its forward end, the frame includes a transversely extending sill 28 adapted to receive a bumper 29 carried by the forward end of the body. The frame further includesa mounting 30 for a latch Shaft 31 having secured thereto a latchl element 32A .for coaction with a latch element 33 carried an operating rd35 leadin to the cab of lthe vehicle to which the b y is applied.

A jack knife connection is provided bei tween the body and frame including a relati-vely long link 36 pivoted to the frame and aI short link 37 pivoted to the body. The short link 37 is extended beyond the pivotal connection 38 between the links and provided with a hook 39 which 'engages against the link 36 when the links have moved past a point where-they are aligned,

so as to limit movement of the links in thisv t dlrectlon. The plvotal connection of the link 36 with the frame comprisesl al bolt 40 directed through a plate forming a'transverse member of theframe, the bolt beneath the plate being surrounded by a spring 42 which engaging the plate and a nut 43 upon the bolt holds the "bolt seated This spring may yield under stress to permit a slight upward movement of the bolt.

In the dumping position in which 'the parts have been illustrated, the pivotal connection 38 of the links 36 and 37 is moved beyond the front end of the body from the point of pivotal connection of these links with the frameA and body. The body is resting u on the rollers 26 and accordingly has a ten ency to move downwardly at its orward end. This downward movement would, however, necessitate a further rearward movement of the pivotalconnection of the links 36`and 37 and this is prevented by the engagement of the hook 39. To returned the body to its load transporting position, a pull is exerted upon the operating member 35. This pull is transmitted to the lever34 and through this-lever. by a link 44 havino'a hooked rear end 45 engaging the rear iilce of the link 36, ,forcing the link y 36 forwardly, so that the links 36 and 37 vAfter this primary rollers 24 come into engagement with the u may fold. Downward movement ofthe torward end of the body being now unopposed, this end moves downwardly. 'During initial downward movement, the pivot is about the axis of the rollt"` 25 and there is 'accordingly vno forwart movement of the body. tilting movement, the

faces 16 of the cams and the motion of the body then becomes a combined tilting and longitudinal shift during which the rollers 24 and 25 move 'forwardly on the faces 16 and 17 ot the cams. When the rollers 24 come into engagement with the downbent forward end portions of the sections 19 of the retaining bars. orwardf motion; is checked'. At this time, the body moving under theimpetns gained during the preceding movements, pivots about the rollerl 24.

By this pivotal movement, the bumper 29 comes into engagement with the sill 28'and the latch elements 32. and 33 are engaged.

.At the same time, the flange 27 seats upon the side member lOiand in so doing, lifts the roller 24 from the iange 13 to a sutticient extent to insure against the weight being borne thereby. The roller 25 is elevated and comes intoy po. 'tion in the cove 18 of the retaining bar. Since both the flange 27 an roller 24 lie forwardly ot 'the center of gravity of the body when loaded, it will be obvious that upon a second operation of the operating member 35, the movementsl just described 4will be reversed and return to its dumping position. As the body arrives at its dumplng position, its movement is checked b the lin-ks 36-and 37, the mounting of the l1nkl36 yielding to cushion the shock occasioned by the checking of the motion of the body. of the links moves beyond the points of pivthe body will The pivotal connection Y otal connection with the body and frame, so l It will be obvious that a construction o Y this character .may be very readily and cheaply produced and, plicity, may be very readily attached to or removed from a vehicle. further promotes Since the construction hereinbefore set forth is capable of a certain range of change and modification without. materially departing from the spirit of the invention'. I do not limit myself to suc cept as hereinafter claimed.

I claim 1. In a dumping body construction, a body, a supportmgl frame, means mountlng the body on the frame for, .tilting and shifting movements in=the same general direction comprising two pairs ot rollers' alternately engaging the frame to act as primary and secondary pivots foi-'thc body during tilting of the body in either direction and inclined caln tracks with which either of said pairs of rollers will engage when the body has tilted 'through a prcdetcrmincd degree-about the other pair as a pivot and prior to their operation as a secondary pivot, engagement of either pair of rollers with said cam tracks causing longitudinal shifting movement ot the body Ain thc direction of initial tilt.

because of its sim-A This simplicity; durability and etlicicncy.`

1 specific structure cx-` iso stops with which said pairs of rollers alternately engage to limit shifting of the body, each pair ,of rollers upon engagement with its stops actin 'as a pivot for linal tilting `movement of t e' body.

3. In a dumping body construction, a body, a supporting frame, means mounting the body on the frame for tilting and shifti ing movements-in the saine general direction comprising two pairs of rollers alternately engaging the frame to act as pivots for the bo y during tilting ofthe body in eitherdirection, cam tracks with which either of said pairs of rollers is engaged by initial tilting movement of the body about the other .pair as a pivot,- engagement of either pair of rollers lwith said cam tracks causin longitudinal shifting movement of the od in vthe direction of initial tilt, the rollers o one pair lying forwardly of the center 'f gravity of the body when loaded and in the load transportin position, theV rollers of the other pair dying' rearwardly of the center of gravity of the body when empty -and in the dumping position, and stops with which said pairs of rollers alternately engage to limit shifting of the body, each pair of' rollers upon engagement with its stops acting as a pivot for final tilting movement of the body. f 4. In a dumping body construction, a body, a supporting frame,.means mounting the body on the frame for tilting and shifting movements in the same general direction comprising two airs of rollers alternately engaging the rame to act as pivots for the body during tilting of the body in either direction, and cam tracks secured to the frame each cam track having a central peak and having its faces inclining downwardly and forwardly and downwardly and rearwardly from' said peak,initial tilting movement of the-body about either of said pairs of rollers as pivots bringing the other pair of rollers into engagement with the cam faces at the opposite sides of the peaks from the rollers which are acting as pivots whereby upon continued tilting movement the body is shifted.

5. In a dumping body construction.v a, body, a supporting frame, means mounting the body on the frame for ltilting and shifting movements in the same general direction comprising two pairs of rollers alternately engaging the frame to Vac't asfpivots for the body during tilting of the body inV either direction, cam tracks securedto the frame, each cam track having a central peal: and having its faces inclining downwardly and forwardly 'and downwardly and rearwardly from said peak, initial tilting movement of the body about either of said pairs of rollers as `pivots bringing the other pair of rollers into enga ement with the cam faces at the opposite sides of the peaks. from the rollers which`-y are lacting'as pivots whereby upon continued tilting movement the body is shifted, and stops with which said pairs of rollers alternately engage to limit shifting ofthe body, each pair of rollers upon engagement with its stops acting as a pivot body body, a supporting frame, means mounting the body on the frame `for tilting and shifting movements in the sanie general direction comprising two pairs of rollers alternately engaging the frame Ito act as pivots the rollers which are acting aspivots where-4 by vupon continued tilting movement the body lis shifted, the rollersof one pair lying forwardly of the center of gravity of the body when loaded and in the load transporting position, the rollers ofthe other pair ying rearwardly of the center of gravity of the body when empty and in the dumping position.

7. In a dumping body construction, a body, a supporting frame, means mounting the body on the frame for tilting and shifting movements in the same 4 general direction comprising two pairs of rollers alternatel engaging the frame to act as ypivots for t e body during tilting of the body in either direction, cam tracks secured to the frame, each cam track having a central peak and having its faces inclining downwardly and forwardly and downwardly and rearwardly from said peak, initial tiltin movement of the body about either of said pairs of rollers as pivots bringing the other pair of rollers .into engagement with the cam faces at the opposite sides of the peaks from the rollers which are acting as pivots whereby upon continued tilting movement the body is shifted, the rollers of one pair lying forwardly of the center of gravity of the body when loaded and in the load transporting position, the rollers of the other pair lyin rearwardly of 4the center of gravityof the ody when empty and in the dumping position, and stops with which said pairs of rollers alternately engage'to limit shi ting of the body. -each pair of rollers upon engagement with its stops acting as a pivot for final tilting movement of the body.

for final tilting movement of the- 6. In a dumping lbody construction, a-

lltlv and forwardly and downwardly 8. In a dumping body construction, a body, a supporting frame, means mounting the body on the frame for tilting and shifting movements in the same general direction comprising two pairs of rollers alternately engaging the frame to act` as pivots for the body during tilting of the body in either direction, cam tracks secured to the frame. each cam track having a cent-ral peak and having its faces inclining downwardly and rearwardly from said peak, initial tilting movement of the body about Yeither-of said pairs of rollers as pivots bringing the other pair of rollers into engagement with the cam faces at the opposite sides of the peaks from the' rollers Whichare acting as pivotswliereby upon contined tilting movement tbe body is shifted, the body having brackets at each side mounting a. roller of each pair and a. member upon said bracket engaging the frame when the-body is in load transporting position to support the body at thccenter thereof and remove weight from said rollers.

In testimony whereofl aix my signature.

FRED BISZANTZ..l 

